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Re: Using __builtin_expect (likely/unlikely macros)
From: |
Alex Gramiak |
Subject: |
Re: Using __builtin_expect (likely/unlikely macros) |
Date: |
Fri, 19 Apr 2019 08:45:27 -0600 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) |
Konstantin Kharlamov <address@hidden> writes:
> The slowdown is to be expected, given that GCC devs said that "cold" produces
> very inefficient code.
I took his statement to mean that the code generated in cold branches
are very inefficient. In this case that would refer to the
obsolete/unused/error CASEs, which should not be getting called, so I
don't believe the slowdown is to be expected.
- Re: Using __builtin_expect (likely/unlikely macros), (continued)
- Re: Using __builtin_expect (likely/unlikely macros), Stefan Monnier, 2019/04/16
- Re: Using __builtin_expect (likely/unlikely macros), Konstantin Kharlamov, 2019/04/16
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/18
- Re: Using __builtin_expect (likely/unlikely macros), Konstantin Kharlamov, 2019/04/18
- Re: Using __builtin_expect (likely/unlikely macros), Andy Moreton, 2019/04/18
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/18
- Re: Using __builtin_expect (likely/unlikely macros), Andy Moreton, 2019/04/18
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/18
- Re: Using __builtin_expect (likely/unlikely macros), Alex Gramiak, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros), Konstantin Kharlamov, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros),
Alex Gramiak <=
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros), Alex Gramiak, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros), Alan Mackenzie, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/19
- Re: Using __builtin_expect (likely/unlikely macros), Alan Mackenzie, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Andy Moreton, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Eli Zaretskii, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Paul Eggert, 2019/04/20
- Re: Using __builtin_expect (likely/unlikely macros), Eli Zaretskii, 2019/04/20